drivers/mmcsd/mmcsd_sdio.c: enable clock before issue CMD0

In mmcsd_cardidentify(), the clock is not enabled before issuing
CMD0, and the clock has been disabled in mmcsd_removed(). It makes
no sense to enable the clock after issuing CMD0, because when CMD0
is issued, it will exit with error due to the clock is not enabled.

Signed-off-by: Yinzhe Wu <Yinzhe.Wu@sony.com>
Reviewed-by: Yuezhang Mo <Yuezhang.Mo@sony.com>
Reviewed-by: Jacky Cao <Jacky.Cao@sony.com>
Tested-by: Yinzhe Wu <Yinzhe.Wu@sony.com>

Author: Windrow14

drivers/mmcsd/mmcsd_sdio.c

@@ -3463,17 +3463,17 @@ static int mmcsd_cardidentify(FAR struct mmcsd_state_s *priv)
       return -ENODEV;
     }
 
+  /* Set ID mode clocking (<400KHz) */
+
+  SDIO_CLOCK(priv->dev, CLOCK_IDMODE);
+
   /* For eMMC, Send CMD0 with argument 0xf0f0f0f0 as per JEDEC v4.41
    * for pre-idle. No effect for SD.
    */
 
   mmcsd_sendcmdpoll(priv, MMCSD_CMD0, 0xf0f0f0f0);
   nxsig_usleep(MMCSD_IDLE_DELAY);
 
-  /* Set ID mode clocking (<400KHz) */
-
-  SDIO_CLOCK(priv->dev, CLOCK_IDMODE);
-
   /* After power up at least 74 clock cycles are required prior to starting
    * bus communication
    */